I used to run smoothly (~90% all the time) Twilight Princess with Dolphin 4.0 on Ubuntu 13.10 (saucy),
sadly i decided to upgrade to Trusty ( Ubuntu 14.04 LTS) and by the way clean my drive and delete everything.

Now I can only run the dolphin-emu-master version of Dolphin as the stable version is not available :

I then installed dolphin-emu-master which is currently dolphin 4.0 1492 and The Legend of Zelda Twilight Princess doesn't run smoothly anymore(game at 13%/25% all the time), even if i try changing every settings, i already read a bit about it. I also tried Super Mario Galaxy and it is even worse.

Is there anything that I can do besides waiting for a stable version of Dolphin for Trusty ?

thank you for all your answers, i ended following degasus advice and built dolphin 4.0 on my own. Thank you very much TP now runs smoothly again and super mario galaxy is playable (though the sound is quiet bad)